Arch Linux

simondvt

Member

Registered: 2023-11-12

Posts: 2

KDE second monitor randomly goes black for a few seconds

Hi all, I have a problem with my laptop: my second monitor randomly goes black for a few seconds.

Both my laptop monitor and second monitor are 60hz.

The laptop does NOT have an Nvidia card, only the Intel alderlake.

This happens only with KDE (both X11 and Wayland), it does NOT happen with a tty or another desktop environment like lxde.

I tryed changing resolution and refresh rate without luck.

I tryed changing HDMI but without luck. This second monitor and HDMI cable works perfectly with another laptop which has Archlinux + KDE.

Based on this, I have excluded any hardware/cable faults, thus KDE must be the problem. Now, I really like KDE and want to use it, what steps can I take in order to debug and fix this issue?

Thanks

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,267

Re: KDE second monitor randomly goes black for a few seconds

Check post

sudo journalctl -b

when the issue appears

simondvt

Member

Registered: 2023-11-12

Posts: 2

Re: KDE second monitor randomly goes black for a few seconds

journalctl doesn't show any message when the issue appear.

Hoever I noticed that if I have a background video (from youtube on firefox) going on with the audio sink set to my monitor (even muted with its window minimized) the problem disappears.